Island



(No Model.)

W. R. DUTEMPLE.

V GEM SETTING. No. 303,424. Patented Aug. 12, 1884.

FIEnE.

WITN 55155. INVENTEIR UNITED STATES PATENT @EEICE.

\VILLIAM R. DUTEMPLE, OF PROVIDENCE, RHODE ISLAND GEM-SETTING.

Application filed June 23,1884.

Z'o aZZ whom it may concern.- I

Be it known that I, WVM. R. DUTEMPLE, a

citizen of the United States, residing at Proviclear, and exactdescription of the invention,

such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters or figures of reference marked thereon, which form a partof this specification.

My invention relates to open or pronged settings used in jewelry tosecure gems, &e.; and it consists of prongs having a coneavoconvexcross-section formed from asheet-metal blank.

The invention further consists in combining said prongs with a swaged orstruck-up base, the latter having openings therein adapted to receivethe prongs.

The object of my invention is to produce a strong gem-setting from verythin stock. This I am enabled to accomplish by means of theconcavo-convex prongs, the inner or concave surface of the latter at thesame time serving to admit rays of light, thereby increasing thebrilliancy of the gem.

In the accompanying drawings, Figure 1 represents a perspective viewof'the invention, showing a gem in position. Fig. 2 is a centralsectional View of the same with the gem removed. Fig. 3 is a plan andsectional view of the base, and Figs. 4, 5, and 6 are detail views of apron SPECIFICATION forming part of Letters Patent No. 303,424, datedAugust 12, 1,884.

(No model.)

The following is a detailed description of the invention:

A, referring to the drawings, is the setting complete, consisting of thebase B and prongs c, the latter being formed from the blank shown inFig. 4, the upper end of which is beveled at 0 terminating in the point0". The blank is swaged to a concavo-convex form, (see Figs. 5 and 6,)the beveled edges 0 forming a seat for the gem, while the point 0 servesto retain it in position. The base B is swaged from sheet-metal stock,the upper surface, I), having openings 0 therein adapted to receive saidprongs c, the latter being secured within the base by solderin Havingthus described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. Ina gem-setting, the prongs 0, herein described, formed from asheet-metal blank, having its upper end beveled at 0", terminating inthe point 0, the whole having a coneavo-convex cross-section,substantially as shown, and for the purpose set forth.

2. In a gem-setting, the prongs 0, concavoconvex in crosssection, incombination with the base B, the latter having openings adapted toreceive the prongs c, which are secured therein by soldering, the wholeconstructed and arranged substantially as shown and described.

In testimony whereof I have affixed my signature in presence of twowitnesses.

WM. It. DUTEMPLE.

Witnesses:

, E. H. LINCOLN,

M.- CRADDOCK.

